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2. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   Annual greenhouse gas (GHG) savings from using a ground source heat pump instead of a high-efficiency furnace in a detached residence (assuming no specific supply of renewable energy) Country Electricity CO 2 Emissions Intensity GHG savings relative to natural gas heating oil electric heating; Canada: 223 ton/GWh [36] [37] [38] 2.7 ton/yr: 5.3 ...

3. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   In most settings, heat pumps will reduce CO 2 emissions compared to heating systems powered by fossil fuels. [62] In regions accounting for 70% of world energy consumption, the emissions savings of heat pumps compared with a high-efficiency gas boiler are on average above 45% and reach 80% in countries with cleaner electricity mixes. [4]

4. Gas heater - Wikipedia

   en.wikipedia.org/wiki/Gas_heater

   Upright non-flued liquefied petroleum gas heater, 1970s A wall mounted gas heater that runs on either propane or natural gas. A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane, or butane. Indoor household gas heaters can be broadly categorized in one of two ways: flued or ...

5. Six household appliances that have taken heat from Biden's ...

   www.aol.com/news/six-household-appliances-taken...

   Under the 2023 proposal, DOE would have banned the future sale of gas stoves that consume more than 1,204 thousand kBtu per year. Restaurant owners have fumed over potential gas stove ban regulations.

6. Cogeneration - Wikipedia

   en.wikipedia.org/wiki/Cogeneration

   Some CHP plants use waste gas as the fuel for electricity and heat generation. Waste gases can be gas from animal waste, landfill gas, gas from coal mines, sewage gas, and combustible industrial waste gas. [12] Some cogeneration plants combine gas and solar photovoltaic generation to further improve technical and environmental performance. [13]

7. Thermal efficiency - Wikipedia

   en.wikipedia.org/wiki/Thermal_efficiency

   An electric resistance heater has a thermal efficiency close to 100%. [8] When comparing heating units, such as a highly efficient electric resistance heater to an 80% efficient natural gas-fuelled furnace, an economic analysis is needed to determine the most cost-effective choice.